This is an EXCELLENT condition 20 inch round barrel Winchester 1906 SHORT only. In the first 2 years of production the 1906 was chambered .22 Short only. This barrel was made here in the US by 2 very talented gentlemen that specialize in Winchester restorations. The 1906 short specs are .219 Bore, ..224 Groove and a 1 x 20 twist. 4140 steel varies in condition. All dove tails for sights are cut along with Magazine Hanger (magazine ring) cut outs, and extractor slot. These barrels are ready to be installed and very accurate!